EP1176437A3 - Graded index type optical fibres - Google Patents

Graded index type optical fibres Download PDF

Info

Publication number
EP1176437A3
EP1176437A3 EP01124335A EP01124335A EP1176437A3 EP 1176437 A3 EP1176437 A3 EP 1176437A3 EP 01124335 A EP01124335 A EP 01124335A EP 01124335 A EP01124335 A EP 01124335A EP 1176437 A3 EP1176437 A3 EP 1176437A3
Authority
EP
European Patent Office
Prior art keywords
polymers
layers
multilayer structure
type optical
blended
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01124335A
Other languages
German (de)
French (fr)
Other versions
EP1176437A2 (en
EP1176437B1 (en
Inventor
Tomoyoshi Yamashita
Haruko Miyauchi
Yasushi Kawarada
Kazuki Nakamura
Norizi Oishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Publication of EP1176437A2 publication Critical patent/EP1176437A2/en
Publication of EP1176437A3 publication Critical patent/EP1176437A3/en
Application granted granted Critical
Publication of EP1176437B1 publication Critical patent/EP1176437B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
    • G02B6/0288—Multimode fibre, e.g. graded index core for compensating modal dispersion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00663—Production of light guides
    • B29D11/00682—Production of light guides with a refractive index gradient
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
    • G02B6/03633—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - -

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Multicomponent Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

Disclosed is a graded index type optical fiber having a multilayer structure comprising a plurality of concentrically arranged non-blended layers (LNB1,LNB2,LNB3) formed of (co)polymers selected from the group consisting of two or more homopolymers composed of units of vinyl monomers and one or more binary copolymers composed of units of the vinyl monomers each of the (co)polymers having a glass transition temperature of 80°C or above, wherein the refractive index is highest at the center of the multilayer structure and decreases gradually toward the outer periphery thereof. The (co)polymers exhibit low levels of residual monomer(s) and chain transfer agent. One or more sheath layers can be formed on the outer periphery of the multilayer structure. Each pair of non-blended layers (LNB1,LNB2,LNB3) may have therebetween a blended layer (LB1,LB2) formed of the (co)polymers of those layers.
EP01124335A 1997-07-25 1998-07-27 Graded index type optical fibres Expired - Lifetime EP1176437B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP20062397 1997-07-25
JP20062397 1997-07-25
JP26427097 1997-09-29
JP26427097A JP3916304B2 (en) 1997-07-25 1997-09-29 Gradient index optical fiber
EP98933939A EP1026525B1 (en) 1997-07-25 1998-07-27 Graded index optical fibre

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP98933939A Division EP1026525B1 (en) 1997-07-25 1998-07-27 Graded index optical fibre
EP98933939.5 Division 1998-07-27

Publications (3)

Publication Number Publication Date
EP1176437A2 EP1176437A2 (en) 2002-01-30
EP1176437A3 true EP1176437A3 (en) 2002-03-13
EP1176437B1 EP1176437B1 (en) 2007-10-03

Family

ID=26512304

Family Applications (3)

Application Number Title Priority Date Filing Date
EP03019658A Withdrawn EP1376167A1 (en) 1997-07-25 1998-07-27 Graded index type optical fibers
EP01124335A Expired - Lifetime EP1176437B1 (en) 1997-07-25 1998-07-27 Graded index type optical fibres
EP98933939A Expired - Lifetime EP1026525B1 (en) 1997-07-25 1998-07-27 Graded index optical fibre

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP03019658A Withdrawn EP1376167A1 (en) 1997-07-25 1998-07-27 Graded index type optical fibers

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP98933939A Expired - Lifetime EP1026525B1 (en) 1997-07-25 1998-07-27 Graded index optical fibre

Country Status (9)

Country Link
US (1) US6529665B1 (en)
EP (3) EP1376167A1 (en)
JP (1) JP3916304B2 (en)
KR (2) KR20040004477A (en)
CN (1) CN1119676C (en)
AU (1) AU736819B2 (en)
CA (1) CA2297159C (en)
DE (2) DE69838554T2 (en)
WO (1) WO1999005548A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2001294554A1 (en) * 2000-09-15 2002-03-26 First Quality Fibers, Inc. Apparatus for manufacturing optical fiber made of semi-crystalline polymer
US6767978B2 (en) 2002-01-03 2004-07-27 Atofina Chemicals, Inc. Copolymers containing fluoro and silyl groups and their use in marine antifoulant composition
US20050041944A1 (en) * 2002-07-26 2005-02-24 Cryan Colm V. Graded index fiber array and method of manufacture
US7592171B2 (en) * 2003-02-20 2009-09-22 Centro Nacional De Investigaciones Cientificas (Cnic) Vibrio cholerae with improved biological safety features in freeze dried form
KR100638436B1 (en) * 2004-11-04 2006-10-24 주식회사 효성 Graded-index plastic optical fiber and the method of preparing the same
WO2010087595A2 (en) * 2009-01-30 2010-08-05 웅진케미칼 주식회사 Light modulation object
CN101634728B (en) * 2009-08-18 2011-10-19 长飞光纤光缆有限公司 Anti-bending multimode fiber and manufacturing method thereof
KR100968088B1 (en) * 2009-11-13 2010-07-09 에프에이테크 주식회사 Back light of lighting sign plate
JP5859819B2 (en) * 2011-11-17 2016-02-16 旭化成ケミカルズ株式会社 Methacrylic resin and melt-formed body thereof
WO2013080568A1 (en) * 2011-12-01 2013-06-06 コニカミノルタ株式会社 Method for producing optical film, optical film, polarizing plate and liquid crystal display device
DE102012001694A1 (en) 2012-01-28 2013-08-01 Rainer Schmidt Light conductor for transporting light, has inner shell provided at inner and/or outer side of cross section region, and fixation unit arranged within outer shell and cross-sections to be utilized as transportation path for material mediums
EP3239748B1 (en) * 2014-12-25 2022-01-26 Kuraray Co., Ltd. Method for manufacturing optical fiber rod
US10975188B2 (en) * 2017-01-20 2021-04-13 Fudan University Rapid self-assembled small-sized block polymer material with low quenching temperature and the preparation and application thereof
CN112839970B (en) * 2018-11-22 2022-08-30 东丽株式会社 Fluoropolymer particles
US20220049059A1 (en) * 2018-12-18 2022-02-17 Basf Se Water-borne core-shell polymers, a method for making the same and the applications thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0488390A1 (en) * 1990-11-30 1992-06-03 Mitsubishi Rayon Co., Ltd. Plastic optical fibers
EP0497984A1 (en) * 1990-08-16 1992-08-12 Nippon Petrochemicals Co., Ltd. Method of manufacturing optical transmission medium from synthetic resin
US5235660A (en) * 1992-07-10 1993-08-10 Peachtree Fiberoptics, Inc. Graded polymer optical fibers and process for the manufacture thereof
JPH08304640A (en) * 1995-05-12 1996-11-22 Sumitomo Electric Ind Ltd Plastic optical fiber
JPH09133820A (en) * 1995-11-09 1997-05-20 Sumitomo Wiring Syst Ltd Manufacture of preform for gradient index plastic optical fiber

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS506350A (en) 1973-05-16 1975-01-23
JPS60119509A (en) 1983-12-02 1985-06-27 Sumitomo Electric Ind Ltd Manufacture of preform for plastic optical fiber
JPH05232337A (en) 1992-02-21 1993-09-10 Furukawa Electric Co Ltd:The Plastic optical fiber
JPH08313734A (en) 1995-05-16 1996-11-29 Sumitomo Electric Ind Ltd Production of plastic optical fiber
JPH09133819A (en) 1995-11-09 1997-05-20 Sumitomo Wiring Syst Ltd Production of graded index plastic optical fiber
JPH09189813A (en) 1996-01-09 1997-07-22 Sumitomo Electric Ind Ltd Plastic optical fiber
ATE386953T1 (en) 1996-03-28 2008-03-15 Mitsubishi Rayon Co OPTICAL FIBER WITH REFRACTIVE INDEX GRADIENT AND METHOD FOR THE PRODUCTION THEREOF
US5729645A (en) * 1996-08-13 1998-03-17 The Trustees Of The University Of Pennsylvania Graded index optical fibers
SE508067C2 (en) * 1996-10-18 1998-08-24 Ericsson Telefon Ab L M Optical conductor made of a polymeric material comprising glycidyl acrylate and pentafluorostyrene

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0497984A1 (en) * 1990-08-16 1992-08-12 Nippon Petrochemicals Co., Ltd. Method of manufacturing optical transmission medium from synthetic resin
EP0488390A1 (en) * 1990-11-30 1992-06-03 Mitsubishi Rayon Co., Ltd. Plastic optical fibers
US5235660A (en) * 1992-07-10 1993-08-10 Peachtree Fiberoptics, Inc. Graded polymer optical fibers and process for the manufacture thereof
JPH08304640A (en) * 1995-05-12 1996-11-22 Sumitomo Electric Ind Ltd Plastic optical fiber
JPH09133820A (en) * 1995-11-09 1997-05-20 Sumitomo Wiring Syst Ltd Manufacture of preform for gradient index plastic optical fiber

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199730, Derwent World Patents Index; Class A32, AN 1997-329554, XP002145555 *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03 31 March 1997 (1997-03-31) *

Also Published As

Publication number Publication date
EP1176437A2 (en) 2002-01-30
JP3916304B2 (en) 2007-05-16
CA2297159A1 (en) 1999-02-04
EP1026525A4 (en) 2000-10-18
WO1999005548A1 (en) 1999-02-04
JPH1195045A (en) 1999-04-09
US6529665B1 (en) 2003-03-04
CN1269019A (en) 2000-10-04
EP1376167A1 (en) 2004-01-02
AU736819B2 (en) 2001-08-02
KR20010022243A (en) 2001-03-15
DE69838518T2 (en) 2008-07-03
EP1026525B1 (en) 2007-10-10
KR100401150B1 (en) 2003-10-10
CN1119676C (en) 2003-08-27
DE69838554T2 (en) 2008-07-10
EP1176437B1 (en) 2007-10-03
DE69838518D1 (en) 2007-11-15
KR20040004477A (en) 2004-01-13
CA2297159C (en) 2003-09-02
AU8358298A (en) 1999-02-16
DE69838554D1 (en) 2007-11-22
EP1026525A1 (en) 2000-08-09

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